Home / 220,160.16-330,136.15-85,287.40

Finding the Fourth Proportional to 220,160.16, 330,136.15 and 85,287.40

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Solution

The fourth proportional to 220,160.16, 330,136.15 and 85,287.40 is: 127,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,160.16 : 330,136.15 = 85,287.40 : x
  2. Step 2: Convert to fraction form
    220,160.16/330,136.15 = 85,287.40/x
  3. Step 3: Cross multiply
    220,160.16x = 330,136.15 × 85,287.40
  4. Step 4: Simplify right side
    220,160.16x = 28,156,453,879.51
  5. Step 5: Solve for x
    x = 28,156,453,879.51/220,160.16
  6. Step 6: Final answer
    x = 127,890.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.